Imagine that you perform an experiment where you knock out the Trpc$2$ channel in a male mouse. How do you expect this mouse will respond to an intruder mouse that is placed in his cage?

The mouse will attack the intruder mouse, if the intruder is male.

The mouse will mount both male and female intruder mice.

The mouse will attack the female intruder mouse, but it will not attack a male intruder mouse.

The mouse will mount the male intruder mouse, but it will not mount a female intruder mouse.

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